Dear Isogeochemers,
We have been using Hokko beads and platinum sticks for a while now.  I
would be grateful for any tips regarding using them and recycling them
between runs. i.e. how hot and how long do you heat them?  Is there any
adverse effect from keeping the sticks in contact with the water prior to
running etc, how do you know if they have been poisoned (other than no
equilibration)? etc.